摘要
针对Hash链应用中有限长度的限制,提出了一种“肩扛式”自更新Hash链机制(SRHC).所提机制具有传统Hash链应用特性的同时,使用基于单向Hash函数的一次签名技术,实现更新Hash链验证锚的平滑、安全的传递,完成Hash链的自更新.证明了所提出机制的安全性完全且只依赖于所配置的Hash函数的安全性.与目前Hash链机制相比,该机制实现了有效、平滑、安全的自更新,同时还有细粒度鉴别、前摄更新等增强安全属性.
The finite length of Hash chain limits its applications. Based on one time signature （OTS） technique, a scheme of self-renewable Hash chain （SRHC） is proposed. The proposed scheme not has the whole properties of conventional Hash chains but also renews itself periodically in a secure and smooth way via securely delivering bits of next verification anchor using OTS. A proof is stated to show that SRHC is secure and its security completely relies on the Hash function deployed. Compared with conventional Hash chains, SRHC renews itself efficiently, smoothly and securely and has some enforced security properties such as finer granularity authentication and proactive recovery.
出处
《武汉大学学报（理学版）》
CAS
CSCD
北大核心
2006年第5期596-599,共4页
Journal of Wuhan University:Natural Science Edition
基金
国家自然科学基金(90204015
60473021)
河南省科技攻关项目(0524220044
0624260017)
河南工业大学科研基金(0401009
050211
050215
050216)资助项目
关键词
HASH链
自更新
一次签名
鉴别
前摄更新
Hash chain
self-renewal
one-time signature
authentication
proactive recovery
